The eeBrake G4 is the fourth generation eeBrake featuring 100% CNC machined parts, a wider design optimized for 22 – 28mm rims, stiffer black arch spring, a revised one-piece center adjuster with built in resistance for easier use and ghosted laser etching that will stand the test of time – all with the same stopping power and light weight that youve come to rely on from eeBrakes.